See the chemical equation given for the reaction of burning of carbon in oxygen to form carbon dioxide. 

$\mathrm{C}+{\mathrm{O}}_2\to {\mathrm{CO}}_2$

How many oxygen atoms combine with one carbon atom?

See the chemical equation given for the reaction of burning carbon in oxygen to form carbon dioxide. 

$\mathrm{C}+{\mathrm{O}}_2\to {\mathrm{CO}}_2$

How many oxygen atoms combine with $1000$ carbon atoms?

How many GAMs is present the $42 \mathrm{g}$ of nitrogen? Calculate the number of atoms present in the sample? (Atomic mass of $\mathrm{N}=14$)

Complete the table given below by finding out the chemical formula and molecular mass.

(Atomic mass : $\mathrm{H} = 1, \mathrm{O} = 16, \mathrm{N} = 14$)